691995760

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{223}}^1\times {\mathrm{491}}^1$

素因数の和:806

約数の個数: 80

約数和(自身を含む): 1639895040

約数和(自身を除く): 947899280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 158, 223, 316, 395, 446, 491, 632, 790, 892, 982, 1115, 1264, 1580, 1784, 1964, 2230, 2455, 3160, 3568, 3928, 4460, 4910, 6320, 7856, 8920, 9820, 17617, 17840, 19640, 35234, 38789, 39280, 70468, 77578, 88085, 109493, 140936, 155156, 176170, 193945, 218986, 281872, 310312, 352340, 387890, 437972, 547465, 620624, 704680, 775780, 875944, 1094930, 1409360, 1551560, 1751888, 2189860, 3103120, 4379720, 8649947, 8759440, 17299894, 34599788, 43249735, 69199576, 86499470, 138399152, 172998940, 345997880, 691995760]

約数ペア:

[(1, 691995760), (2, 345997880), (4, 172998940), (5, 138399152), (8, 86499470), (10, 69199576), (16, 43249735), (20, 34599788), (40, 17299894), (79, 8759440), (80, 8649947), (158, 4379720), (223, 3103120), (316, 2189860), (395, 1751888), (446, 1551560), (491, 1409360), (632, 1094930), (790, 875944), (892, 775780), (982, 704680), (1115, 620624), (1264, 547465), (1580, 437972), (1784, 387890), (1964, 352340), (2230, 310312), (2455, 281872), (3160, 218986), (3568, 193945), (3928, 176170), (4460, 155156), (4910, 140936), (6320, 109493), (7856, 88085), (8920, 77578), (9820, 70468), (17617, 39280), (17840, 38789), (19640, 35234)]